What is Harmonic affects in power system. what is unit of harmonics and how to measure it. how much value should be in power system.
Harmonics is the frequency distortion. If 50HZ is called no harmonics. More than 50HZ is called Harmonics. It is callisifies as 2 types. Even harmonics, ie 2nd,4th,6th etc. (50HZx2=100Hz). Odd Harmonics, ie 3rd,5th,7th etc (50HZx3=150Hz). Generally even harmonics will not affect the system. Odd only affect. It can be measure by instrument called Power Quality Analysier.
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